Effect of transus based heat treatment on material characterisation of wrought and additive titanium alloy Ti-6Al-4V

Ti-6Al-4V is a popular titanium alloy that has been widely used in industries like biomedical, aerospace, and automotive. This is due to its superior mechanical properties such as high strength, corrosion resistance, toughness, and the high strength to weight ratio. The main objective of this research project is to provide insights about the effect of transus based heat treatment on microstructure and mechanical properties of wrought and SLM Ti-6Al-4V. Selective Laser Melting (SLM) is the chosen fabricating method for generating the additive manufactured samples in this research. Three temperature points near to alpha beta transus zone were selected to determine the effect of heat treatment on the material characterisation. The experimental design consists of heat treating, wrought and SLM Ti-6Al-4V samples to the selected temperatures, 750o C, 800o C and 900o C and followed up with furnace cooling. Further, the heat-treated samples are subjected to metallographic examination, microhardness testing and phase quantification using EBSD. An analysis of changes in microstructure will be conducted to provide a relationship between the effect of heat treatment and the changes in microstructure and corresponding microhardness. An attempt has been made to corroborate the phase quantification data with the variation observed from earlier analysis